Its been a few years since last using this and its not what I am used and could use some help

I used to use this for an MMO game when an item gets listed for in-game sale, it took a while for your want list to trigger but monitoring the webpage and once the item gets added, Distill would alert you much faster than anything else.
So here I am again but I want to use this on Discogs. When you list an item, it takes anywhere between 10-30 minutes for alarts to get sent out even tho the listening itself shows up almost instantly.

I am trying to watch a space that states “No items available in the Marketplace”
This disapears when a item gets posted and for whatever reason, when I select the option to watch selected parts of the site and I highlight that sentence that disappears once an item gets listed, all I can do is just select that part and go no further. If anyone can help me, that would be great. IDK if I can send links in question but here are the two different versions of the LP I am watching. One if on blue wax and the other is on black.
(Blue) https://www.discogs.com/release/18433213-Dahmer-The-Studio-Sessions-Discography

(Black)https://www.discogs.com/release/13152687-Dahmer-The-Studio-Sessions-Discography

I would like to have it triggered when “No items available in the Marketplace” is no longer seen on the site. It gets replaced with either "copies from (price) or "Copy from (price) which the later is the more likely to be seen since its rare to see more than one vinyl LP listed… I would send a link to what it looks when the CD is for sale as they have many of them listed but I can only do two links.

I am going crazy and I can’t seem to remember how I got it last time, even with the guides they have

@Amebix when monitoring content that is expected to be removed, it is a good idea to include one more element from the page in your selections. the page’s title is a good choice as it usually is not expected to change. the h1 element (product title) should be a good choice on Discogs.

let me know what you think. cheers!